package com.sqlparser.core.executor.plan;

/**
 * 执行步骤
 * 表示执行计划中的一个操作步骤
 */
public class ExecutionStep {
    public enum StepType {
        TABLE_SCAN,
        FILTER,
        PROJECT
    }
    
    private final StepType type;
    private final String description;
    
    public ExecutionStep(StepType type, String description) {
        this.type = type;
        this.description = description;
    }
    
    public StepType getType() {
        return type;
    }
    
    public String getDescription() {
        return description;
    }
} 